“Neuromotor prostheses (NMPs) aim to replace or restore lost motor functions in paralysed humans by routeing movement-related signals from the brain, around damaged parts of the nervous system, to external effectors. To translate preclinical results from intact animals to a clinically useful NMP, movement signals must persist in cortex after spinal cord injury and be engaged by movement intent when sensory inputs and limb movement are long absent.”
Nature 442, 164-171 (13 July 2006) | doi:10.1038/nature04970; Received 22 March 2006; Accepted 6 June 2006

The article describes the use of neuromotor prostheses “to replace or restore lost motor functions in paralyzed humans by routing movement-related signals from the brain, around damaged parts of the nervous system, to external effectors.”
The implementation of the project is based on the BrainGate Neural Interface System.You may access the article here